Added the pre-requisite for AudioSegment library (GoogleCloudPlatform#2074)

Author: pilotudesh

gemini/orchestration/langgraph_gemini_podcast.ipynb

@@ -135,6 +135,30 @@
         "- **Setting Project Information:**  Setting up your Google Cloud project"
       ]
     },
+    {
+      "cell_type": "markdown",
+      "metadata": {
+        "id": "68664edd8334"
+      },
+      "source": [
+        "### Install FFMpeg on your machine\n",
+        "\n",
+        "Install the FFMpeg libraries for running the AudioSegment library.",
+        "\n",
+        "If you're using Vertex AI, open the **Terminal**. Run the following command:"
+      ]
+    },
+    {
+      "cell_type": "code",
+      "execution_count": null,
+      "metadata": {
+        "id": "No17Cw5hgx12"
+      },
+      "outputs": [],
+      "source": [
+        "sudo apt-get update && apt-get install ffmpeg -y"
+      ]
+    },
     {
       "cell_type": "markdown",
       "metadata": {